WO1990015898A1 - Substrats souples enrobes et leur procede de fabrication - Google Patents

Substrats souples enrobes et leur procede de fabrication Download PDF

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Publication number
WO1990015898A1
WO1990015898A1 PCT/GB1990/000914 GB9000914W WO9015898A1 WO 1990015898 A1 WO1990015898 A1 WO 1990015898A1 GB 9000914 W GB9000914 W GB 9000914W WO 9015898 A1 WO9015898 A1 WO 9015898A1
Authority
WO
WIPO (PCT)
Prior art keywords
composite according
layer
substrate
fabric
silicone elastomer
Prior art date
Application number
PCT/GB1990/000914
Other languages
English (en)
Inventor
Roger Sallis
Original Assignee
Courtaulds Plc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Courtaulds Plc filed Critical Courtaulds Plc
Publication of WO1990015898A1 publication Critical patent/WO1990015898A1/fr
Priority to FI915615A priority Critical patent/FI915615A0/fi

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/04—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06N3/047—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds with fluoropolymers
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
    • D06N3/128—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with silicon polymers

Definitions

  • This invention relates to new and useful composites comprising coated substrates.
  • the present invention is concerned with coating a substrate, such as a knitted or woven fabric and in particular a glass fibre fabric, to provide a product that is flexible and also resistant to chemical attack.
  • a substrate such as a knitted or woven fabric and in particular a glass fibre fabric
  • the present invention relates to a new silicone elasto er/halocarbon polymer matrix useful as a coating for reinforced woven fabrics to produce a product which is flexible, exhibits good matrix integrity, and has good adhesion or bonding of the coating matrix to the substrate.
  • the invention includes composites which have good chemical resistance at elevated temperatures and in humid environments.
  • the invention further relates to a method of manufacturing such composites where the desirable high temperature chemical inertness of halocarbon polymers is combined with the desirable mechanical properties of silicone elastomers in such a way as to retain a desirable fabric-like flexibility.
  • halocarbon polymers Perhaps the most well-known subclass of halocarbon polymers are the fluoropolymers called "perfluoroplastics" which are generally recognised to have excellent electrical characteristics and physical properties, such as a low coefficient of friction, a low surface free energy (i.e. they are non-wetting to many organic fluids), and a very high degree of hydrophobicity.
  • fluoroplastics which do not contain hydrogen such as polytetrafluoro- ethylene (PTFE), fluoro (ethylene-propylene) copolymer (FEP) and copolymers of tetrafluoroethylene and perfluoro- propyl vinyl ether (PFA), are resistant to a wide range of chemicals, even at elevated temperatures, making them particularly useful in a variety of industrial and domestic applications.
  • PTFE polytetrafluoro- ethylene
  • FEP fluoro (ethylene-propylene) copolymer
  • PFA perfluoro- propyl vinyl ether
  • the broad class of fluoropolymers also includes fluoroelastomers which are not only elastomeric, but also possess, to a lesser degree the same physical and electri ⁇ cal properties as fluoroplastics.
  • European Patent Application 125,955A - discloses a composite comprising a substrate coated with a coating comprising a blend of a fluoroplastic and a fluoroelas- tomer.
  • This European patent application exploits the advantageous properties of perfluoroplastics, such as low co-efficient of friction, low surface free energy, a high degree of hydrophobicity and resistance to a wide range of chemicals at elevated temperatures, and combines this with the advantageous properties of flexibility (low flex modulus and conformabi!ity) which fluoroelastomers have.
  • fluoroelastomers which contain hydrogen i.e. those which are partially fluorinated
  • fluoroelastomers which contain hydrogen i.e. those which are partially fluorinated
  • Hydrofluoric acid is highly corrosive to most mater ⁇ ials including those normally used to reinforce textile fabrics and particularly to fabric substrates such as glass fibre fabrics.
  • An object of preferred embodiments of the present invention is to provide a composite having a fabric sub ⁇ strate coated with a coating which will resist chemical attack and be flexible at high temperatures but will not degrade and react adversely with the fabric substrate.
  • the invention meets this objective in that flexibility is imparted by the use of a blend of a halocarbon polymer and a silicone elastomer, desirably a blend which does not break down to produce hydrofluoric acid.
  • a woven glass fabric sub ⁇ strate 10 is precoated with a silicone oil or a blend of silicone oil and a halocarbon polymer such as PTFE and overcoated on both sides with a fluoroplastic layer 11.
  • the layer 11 is itself overcoated with a layer 12 which is a blend of a silicone elastomer and a halocarbon polymer.
  • the resulting composite may be further coated on one or both sides with an optional polyfluoroethylene (or a blend of a halocarbon polymer and a silicone elastomer) top layer 14.
  • the substrate 10 is manufactured by weaving, or knitting aramid fibres (such as for example that known by the trademark "KEVLAR") or glass fibre filaments 10a to form the fabric substrate 10. Surface finishes or sizes are removed from the substrate by heat-cleaning it.
  • aramid fibres such as for example that known by the trademark "KEVLAR”
  • glass fibre filaments 10a to form the fabric substrate 10.
  • a saturant or lubricating agent preferably poly(methylphenylsiloxane) oil, typically in a mixture containing 2 to 14 parts by weight of lubricating agent is applied as a first layer 11 to the substrate.
  • This first layer is provided to minimise the stiffness of the com- pleted composite and may be a relatively thin covering.
  • This first layer may be put down separately or incorporated with a halocarbon polymer such as PTFE.
  • a blend of a silicone elastomer and a halocarbon polymer is applied to the first layer by dipping the substrate in an aqueous dispersion comprising a blend of a silicone elastomer (e.g. in the form of a linear polymer) and polytetrafluoro ⁇ ethylene.
  • the substrate is dried and baked in an oven at a temperature of between 200°F to 500°F (93°C to 260°C).
  • the substrate was repeatedly dipped, dried and sintered until a second layer 12 of about 0.05 to 0.25 mm thickness was applied on top of the first layer 11.
  • the coating of the second layer 12 contained between 10 to 50 per cent by weight of silicone elastomer (preferably 13 per cent by weight of silicone elastomer).
  • the coated substrate was further coated with a thin outer layer 14 of a PTFE by dipping it in the aqueous dispersion, drying and sintering at 700°F (370°C) for 1 minute.
  • PTFE as an aqueous dispersion containing 609. solids
  • poly(methylphenylsiloxane) oil as an aqueous dispersion containing 35* solids
  • the first layer formed by this coating contained 93 parts w/w PTFE and 7 parts w/w poly(methylphenylsiloxane) oil.
  • This first layer was applied as a very light undercoat (typically 5 oz/square yard (170 g/m 2 )) so as not to induce stiffness. The interstices between the fibres of the substrate are unblocked at this stage.
  • a second layer was then applied to this first under ⁇ coat layer.
  • the second layer of approximatel 680 g/m 2 was applied from a blend of a perhalocarbon polymer such as PTFE as an aqueous dispersion containing 60 solids, and a silicone elastomer.
  • the silicone elastomer was a linear poly(diorganosiloxane) emulsion which contains structural units of the formula:
  • R and R which may be the same or different (and which may vary from one structural unit to another), are monovalent hydrocarbon radicals.
  • the preferred silicone elastomer is linear poly(dimethylsiloxane) latex in the form of an emulsion.
  • the emulsifier was anionic and the emulsion comprised 35 per cent by weight of polymer solids.
  • the weight of vinyl in the polymer was 1.77 per cent.
  • This second layer was applied in several passes by dipping, drying and sintering in a two-zone coating tower with drying temperatures of between 200 to 350°F (93 to 177°C) and a sintering temperature of 700°F (370°C).
  • the blend of the second layer comprised 60% perhalocarbon polymer and 40% silicone elastomer, by weight.
  • This third layer comprised a perhalocarbon polymer (for example PTFE) applied as an aqueous dispersion containing 60% solids, and was dried and sintered at 700°F (370°C).
  • a perhalocarbon polymer for example PTFE
  • the final drying and sintering at.700°F (370°C) may be preceded by calendering (e.g. with a 300°F (149°C) calender).
  • the final drying and sintering may be carried out by means of a final dry pass through the coating tower.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Laminated Bodies (AREA)
  • Reinforced Plastic Materials (AREA)

Abstract

L'invention concerne un composite comprenant un substrat en tissu recouvert d'un mélange comprenant un polymère d'halocarbone ainsi qu'un élastomère de silicone, ainsi qu'un procédé de fabrication d'un substrat souple enrobé. Ledit procédé comprend les étapes consistant à former un tissu en fibres, à recouvrir ledit tissu à l'aide d'une matière d'enrobage (11, 12, 14) comprenant un mélange d'un polymère d'halocarbone et d'un élastomère de silicone, et à traiter thermiquement ladite matière d'enrobage afin de lier cette dernière audit tissu.
PCT/GB1990/000914 1989-06-14 1990-06-13 Substrats souples enrobes et leur procede de fabrication WO1990015898A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FI915615A FI915615A0 (fi) 1989-06-14 1991-11-28 Flexibla oeverdragna underlag samt foerfarande foer deras framstaellning.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8913628.7 1989-06-14
GB8913628A GB8913628D0 (en) 1989-06-14 1989-06-14 Flexible coated substrate

Publications (1)

Publication Number Publication Date
WO1990015898A1 true WO1990015898A1 (fr) 1990-12-27

Family

ID=10658397

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1990/000914 WO1990015898A1 (fr) 1989-06-14 1990-06-13 Substrats souples enrobes et leur procede de fabrication

Country Status (6)

Country Link
EP (1) EP0477232A1 (fr)
JP (1) JPH04506548A (fr)
FI (1) FI915615A0 (fr)
GB (1) GB8913628D0 (fr)
IE (1) IE902134A1 (fr)
WO (1) WO1990015898A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996034141A1 (fr) * 1995-04-27 1996-10-31 Aerazur Materiau textile pour la realisation de structures gonflables
WO2001032416A1 (fr) * 1999-11-03 2001-05-10 Oy Oms Optomedical Systems Ltd Structure elastique composite
WO2004088019A1 (fr) * 2003-04-04 2004-10-14 Groep Masureel Veredeling Textile contenant du basalte
WO2010075210A2 (fr) 2008-12-22 2010-07-01 Saint-Gobain Performance Plastics Corporation Matériau en feuille de perfluoropolymère modifié et ses procédés de fabrication
CN107109782A (zh) * 2014-10-07 2017-08-29 美国圣戈班性能塑料公司 强度保留织物
US11230648B2 (en) 2016-10-24 2022-01-25 Saint-Gobain Performance Plastics Corporation Polymer compositions, materials, and methods of making

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7875563B2 (en) * 2007-03-28 2011-01-25 Honeywell International Inc. Method to create an environmentally resistant soft armor composite
JP2013248874A (ja) * 2012-05-30 2013-12-12 Saint-Gobain Performance Plastics Corp 修飾されたパーフルオロポリマー材料

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1082375A (fr) * 1952-08-28 1954-12-29 Connecticut Hard Rubber Co Tissu enduit et procédé de fabrication de ce tissu
US4210697A (en) * 1978-09-15 1980-07-01 Pall Corporation Process for preparing hydrophobic porous fibrous sheet material of high strength and porosity and product
EP0125955A2 (fr) * 1983-04-13 1984-11-21 Chemical Fabrics Corporation Matériau composite renforcé en polymère fluoré et méthode pour sa fabrication
DE3628187C1 (en) * 1986-08-20 1988-02-04 Windel Textil Gmbh & Co Filter material for separating off particles and process for producing the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1082375A (fr) * 1952-08-28 1954-12-29 Connecticut Hard Rubber Co Tissu enduit et procédé de fabrication de ce tissu
US4210697A (en) * 1978-09-15 1980-07-01 Pall Corporation Process for preparing hydrophobic porous fibrous sheet material of high strength and porosity and product
EP0125955A2 (fr) * 1983-04-13 1984-11-21 Chemical Fabrics Corporation Matériau composite renforcé en polymère fluoré et méthode pour sa fabrication
DE3628187C1 (en) * 1986-08-20 1988-02-04 Windel Textil Gmbh & Co Filter material for separating off particles and process for producing the same

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996034141A1 (fr) * 1995-04-27 1996-10-31 Aerazur Materiau textile pour la realisation de structures gonflables
FR2733574A1 (fr) * 1995-04-27 1996-10-31 Aerazur Materiau pour la realisation de structures gonflables ou de volumes souples destines a contenir des gaz, et procede pour la confection de telles structures ou de tels volumes
US9878499B2 (en) 1999-11-03 2018-01-30 Oy Oms Optomedical Systems Ltd Elastic composite structure
US7153789B1 (en) 1999-11-03 2006-12-26 Oy Oms Optomedical Systems Ltd Elastic composite structure
WO2001032416A1 (fr) * 1999-11-03 2001-05-10 Oy Oms Optomedical Systems Ltd Structure elastique composite
WO2004088019A1 (fr) * 2003-04-04 2004-10-14 Groep Masureel Veredeling Textile contenant du basalte
EP2376571A2 (fr) * 2008-12-22 2011-10-19 Saint-gobain Performance Plastics Corporation Matériau en feuille de perfluoropolymère modifié et ses procédés de fabrication
CN102449061A (zh) * 2008-12-22 2012-05-09 美国圣戈班性能塑料公司 改性的全氟聚合物片材料以及制造它的方法
EP2376571A4 (fr) * 2008-12-22 2013-06-19 Saint Gobain Performance Plast Matériau en feuille de perfluoropolymère modifié et ses procédés de fabrication
CN102449061B (zh) * 2008-12-22 2014-08-20 美国圣戈班性能塑料公司 改性的全氟聚合物片材料以及制造它的方法
US8969222B2 (en) 2008-12-22 2015-03-03 Saint-Gobain Performance Plastics Corporation Modified perfluoropolymer sheet material and methods for making same
WO2010075210A2 (fr) 2008-12-22 2010-07-01 Saint-Gobain Performance Plastics Corporation Matériau en feuille de perfluoropolymère modifié et ses procédés de fabrication
CN107109782A (zh) * 2014-10-07 2017-08-29 美国圣戈班性能塑料公司 强度保留织物
EP3204569A4 (fr) * 2014-10-07 2018-07-11 Saint-Gobain Performance Plastics Corporation Tissu à conservation des propriétés de résistance
CN107109782B (zh) * 2014-10-07 2022-11-15 美国圣戈班性能塑料公司 强度保留织物
US11230648B2 (en) 2016-10-24 2022-01-25 Saint-Gobain Performance Plastics Corporation Polymer compositions, materials, and methods of making

Also Published As

Publication number Publication date
EP0477232A1 (fr) 1992-04-01
GB8913628D0 (en) 1989-08-02
IE902134L (en) 1990-12-14
IE902134A1 (en) 1991-01-02
FI915615A0 (fi) 1991-11-28
JPH04506548A (ja) 1992-11-12

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